code: def test_create_index(self):
      ann_json = {"test": ["test", "createIndex"]}
      annotation_file = osp.join(self.tmp_dir.name, "createIndex.json")
      dump(ann_json, annotation_file)
      COCOPanoptic(annotation_file)
  
file_path: mmdetection/tests/test_datasets/test_coco_api_wrapper.py
imports: import os.path
  import tempfile
  import unittest
  from mmengine.fileio import dump
  from mmdet.datasets.api_wrappers import COCOPanoptic
label_desc: Use image node_id 3 for calling the TestCOCOPanoptic obj's underlying member method code with example usage: obj.test_create_index() without return types